Pulse-shaping OFDM/BFDM systems for time-varying channels: ISI/ICI analysis, optimal pulse design, and efficient implementation

This paper considers practically relevant aspects and advantages of pulse-shaping orthogonal/biorthogonal frequency division multiplexing (OFDM/BFDM) systems. We analyze the intersymbol/intercarrier interference (ISI/ICI) in such systems when they operate over time-varying channels. Two methods for an ISI/ICI-minimizing pulse design are proposed, and efficient FFT-based modulator and demodulator implementations are presented. Simulations show that for fast time-varying channels, optimized BFDM systems can outperform conventional OFDM systems with respect to ISI/ICI.

[1]  Karlheinz Gröchenig,et al.  Foundations of Time-Frequency Analysis , 2000, Applied and numerical harmonic analysis.

[2]  P. Bello.  Characterization of Randomly Time-Variant Linear Channels , 1963 .

[3]  P. K. Remvik,et al.  Carrier frequency offset robustness for OFDM systems with different pulse shaping filters , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[4]  Helmut Boelcskei.  Efficient design of pulse-shaping filters for OFDM systems , 1999, Optics & Photonics.

[5]  Antonio Ruiz,et al.  Frequency domain data transmission using reduced computational complexity algorithms , 1980, ICASSP.

[6]  R. Tolimieri,et al.  Characterization of Weyl-Heisenberg frames via Poisson summation relationships , 1992, [Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[7]  Marc Moeneclaey,et al.  BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise , 1995, IEEE Trans. Commun..

[8]  Andreas F. Molisch,et al.  Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels , 1998, IEEE J. Sel. Areas Commun..

[9]  P. Vaidyanathan.  Multirate Systems And Filter Banks , 1992 .

[10]  Anders Vahlin,et al.  Optimal finite duration pulses for OFDM , 1996, IEEE Trans. Commun..

[11]  Ye Li,et al.  Bounds on the interchannel interference of OFDM in time-varying impairments , 2001, IEEE Trans. Commun..

[12]  P.F.M. Smulders,et al.  Exploiting the 60 GHz band for local wireless multimedia access: prospects and future directions , 2002, IEEE Commun. Mag..

[13]  R. Chang.  Synthesis of band-limited orthogonal signals for multichannel data transmission , 1966 .

[14]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[15]  Jean-Claude Belfiore,et al.  A Time-Frequency Well-localized Pulse for Multiple Carrier Transmission , 1997, Wirel. Pers. Commun..